LG LG-H815 - Display Troubleshooting

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3. TROUBLE SHOOTING
When Main display is does not working check CN1 and TP Voltage.
3.15 Display
Image Checking Flow
No
Yes
START
Power On SW
Power is ON?
Power Guide
Main FPCB Connector(CN1)
Connected?
No
END
No
LCD Display OK?
Replace LCD Module
No
Yes
TP1: -5.5V
TP2: 5.5V
TP3: 1.8V
Yes
No
Yes
LCD Display OK?
Replace Main PCB
CN1
TP1
TP2
TP3
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